Machinability study on Al7075/Al2O3-SiC hybrid composites

Authors

  • RAVIKUMAR MUKUNDAIAH Department of Mechanical Engineering, B M S Evening College of Engineering, India
  • Reddappa H N Faculty of Mechanical Engineering, Bangalore Institute of Technology, 560004, Bangalore, India
  • Suresh R Faculty of Mechanical and Manufacturing Engineering, M S Ramaiah University of Applied Sciences, 560058, Bangalore, India
  • Ram Mohan Y S Faculty of Aerospace Engineering, B M S College of Engineering, 560019, Bangalore, India
  • Babu E R Faculty of Mechanical Engineering, Bangalore Institute of Technology, 560004, Bangalore, India
  • Nagaraja C Reddy Faculty of Mechanical Engineering, Bangalore Institute of Technology, 560004, Bangalore, India

DOI:

https://doi.org/10.30544/749

Abstract

In the present research, the effects of volume fraction of SiC+Al2O3 particles and aging temperature on the machinability of stir-casted Al7075 metal matrix composites (MMC) have been investigated. The hybrid composites were fabricated using the liquid metallurgy route. Al7075 was reinforced with different wt. % of SiC (3%, 6%, and 9%) and Al2O3 (2%, 4%, and 6%) which were used to fabricate the hybrid metal matrix composites. The samples were aged at different temperatures (140 ºC, 160 ºC, and 180 ºC) for 4 h and cooled at furnace temperature (27 ºC). The machinability of hybrid metal matrix composites was studied by carrying out L27 orthogonal array experiments. Three process parameters were selected, such as 0.2 mm/min of the depth of cut, 0.1 mm/min of feed rate, and 1500 rpm of spindle speed. The obtained results indicate that the surface roughness and machining force of MMCs increase with an increase in weight percentage of Al2O3/SiC and decrease with the increase in aging temperature. Optimum machining force and surface roughness were obtained at 2% Al2O3 + 3 % SiC and 180°C of aging temperature.

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Published

2022-03-31

How to Cite

MUKUNDAIAH, RAVIKUMAR, Reddappa H N, Suresh R, Ram Mohan Y S, Babu E R, and Nagaraja C Reddy. 2022. “Machinability Study on Al7075/Al2O3-SiC Hybrid Composites”. Metallurgical and Materials Engineering 28 (1):61-77. https://doi.org/10.30544/749.

Issue

Vol. 28 No. 1 (2022): Composite materials - novelties in manufacturing and application

Section

Composite materials - novelties in manufacturing and application

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Copyright (c) 2022 RAVIKUMAR MUKUNDAIAH, Reddappa H N, Suresh R, Ram Mohan Y S, Babu E R, Nagaraja C Reddy

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